Isaac s



v IINiTE STATES ATnNr Prion,

rsAAo s. FILBERT, or wAsniNcroN, nisfrnrcr or COLMBIA.

SNOW- PLOW.'

SPECIFICATION forming part of Letters Patent No; 293,569, dated February 12, 1884;

Application flied July 21,1883, (No mdem' To aZZ'wv/om it may concern:

Be it known that I, ISAAC S. FILBERT, acitizen of the United States, residing at Washington city, District of Columbia, have invented new and useful Improvements in Snow- Plows, of which the following is a specification.

My invention relates to certain new and useful improvements insnow-plows, and particularly to that class designed for cleaning the gutters, or those portions of the streets adjacent to the curbs.

street.

It is well known that as a result of theV cleaning of the foot-pavementsby occupants of houses along the line thereof the snow is' ing device through them and close to the curb.

My invention has for its object to so construct a plow that it shall be capable off-being drawn along close to the curb to clean the gutters, while the draft-horses are'free to walk outside ofthe snow heaps or embankments; and with this end in view my invention consists of a snow-plow having a straight .landside,7 adapted to travel close to and in parallelism with the curb of the street, a mold-board oblique or at an angle to the landside, forming at its junction therewith an acute angle, while the rear end ofthe landside forms a right angle with the back end of the plow, the plow being provided with a beam ,projecting from the mold-board and connected with a hinged or swinging tongue, as will be hereinafter more fully and in detail described. p 4 In order that those skilled may knowhow to make and use my improved plow and fully appreciate its advantages, I will proceed to describe the same, referring by letters to the accompanying drawings, in which- Figure 1 represents a perspective of my iniproved plow in proper juxtaposition with the curb for effective work, and Fig. 2 is a top or plan view of my improved plow.

Similar letters of reference denote like parts in both figures.

A represents the landside of the plow, and B the mold-board, which are joined at the front at an acute angle to form the points. The mold-board is of -course arranged oblique to the landside, and the rearends arejoined and braced bya brace or back-piece, C, the general design being, as clearly shown at Fig. 2, a right-angle triangle.

In practice I have `joined themold-board, landside, and back in such manner with a suitable bottom to form a triangular box with a cross-brace or partition, D, and posts E, the rear portion of the box forming a receptaclefor stones or other suitable weights, F, designed to hold the bottom of the plow in contact with the surface of the street or gutter.

G is a beam arranged at right angles to the landside of the plow, and extending through and beyond the mold-board, as clearly shown in both figures of the drawings, and adapted to receive a suitable clevis, H, which is secured to said beam. by bolts passing through vertical holes a, a series of which may be made to provide for adjustment of the clevis.

I is a pole or tongue connected to theclevis II by a vertical pivot or bolt, b, in such manner that the pole or tongue is free to swing horizontally in the are vof a circle, in order that the horses hitched thereto. may travel outside of any ridge or bank of snow, while the plow remains close to the curb; and in order` that the pole ortongue may not swing too far outward, and thus cause the heel of the plow to swing outward from the curb when resistance is offered to the point of the plow, I provide a guard-chain, J, connected, respectively, to the pole and point of the plow. This chain may be of a suitable predetermined length and permanently fastened, or it may be permanently fastened at one end and adapted to be adj ustably connected at the other. The effect of this chain-connection between the point of the plow and the pole or tongue is to counteract the tendency of the heel of the plow to move away from the curb, as will be fully understood without further explanation.

I have shown the connection .I as consisting of a chain', but it may be a rigid rod provided vwith a series of holes, by means of which and a drop-bolt the outer end may be adj ustably connected to thetongue, thus forming a rigid connection, which is desirable in passing streetcrossings, to avoid any sidewise orwabbling motion of the plow; either the chainor rigid bar, or both, may be used.

In operation, when the plow is drawn for- IOO ward, the landside A is in contact with the curb, the snow is deilected from the curb by the oblique moldboard B, and a channel or furrow is cleaned equal in eXtent to the distance between the rear ends of the mold-board and landside. The snow deflected or pressed away from the curb has by its weight a reactionary effect, operating to hold the landside against the curb, irrespective of the position of the draft-horses.

As before stated, I have in practice formed my plow in the shape of a triangular box with vertical sides, and loaded it with stones or other suitable weighty material, the point and bottom being suitably protected by iron shoes; but I do not wish to confine myself to these details of construction, as the plow proper may be made with a curved or rolling moldboard, and the parts may be made of any suitable material and assembled in any proper manner, so long as the idea is preserved of a landside parallel with the line of draft, a mold-board oblique thereto, and a pole or tongue connected with the plow in such manner as to admit of the horizontal swinging movement, as before explained.

W'hat I claim as new, and desi rc to secure by Letters Patent, is-

1. A snow-plow adapted for cleaning streetgutters, consisting of a landside, A, parallel with the line of draft, a mold-board, B, oblique thereto, a receptacle for the weights F, and a stiff pole, I, connected by a pivoted clevis to the beam G, projecting laterally from the moldboard, substantially as shown and described.

2. In combination with the plow A B and tongue or pole I, connected by pivoted clcvis to the mold-board in rear of the point of the plow, the guard chain or rod J, having one end secured to the point of the plow and the other to the pole or tongue in advance of clevis attachment, substantially as and for the purpose set forth.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

ISAAC S. FILBERT.

NVitnesses:

MURRAY Hanson, .TosErH M. WINKLER. 

